Very good post, excellent information.
From Norway I can add that also here sign language is an official language. (I think USA is lacking on that department). Also, parents of deaf children get free signlanguage-courses, twice a year, each a week long, where also information is given regarding deafness, culture etc. (I think USA is also lacking on that department) With only 4 million people here, the deaf population is very small, but they have excellent rights. Like free education, right to (free) interpreterservices, etc.
Norway is looking after it's deaf population and people are encouraged to learn sign. Not just parents, also grandparents are invited to courses, and also the brother and sister of my deaf daughter are offered a weeks course...